./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 19:12:43,759 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 19:12:43,828 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 19:12:43,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 19:12:43,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 19:12:43,864 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 19:12:43,866 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 19:12:43,866 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 19:12:43,867 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 19:12:43,868 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 19:12:43,869 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 19:12:43,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 19:12:43,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 19:12:43,870 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 19:12:43,870 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 19:12:43,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 19:12:43,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 19:12:43,872 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 19:12:43,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 19:12:43,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 19:12:43,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 19:12:43,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 19:12:43,876 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 19:12:43,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 19:12:43,877 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 19:12:43,877 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 19:12:43,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 19:12:43,877 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 19:12:43,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 19:12:43,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 19:12:43,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 19:12:43,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 19:12:43,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:12:43,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 19:12:43,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 19:12:43,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 19:12:43,889 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 19:12:43,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 19:12:43,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 19:12:43,890 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 19:12:43,890 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 19:12:43,890 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 19:12:43,891 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-15 19:12:44,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 19:12:44,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 19:12:44,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 19:12:44,229 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 19:12:44,229 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 19:12:44,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2024-09-15 19:12:45,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 19:12:45,986 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 19:12:45,987 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2024-09-15 19:12:45,995 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/f81981ec7/da76d057589f491caf56c2f5c2eb6943/FLAGcc269853f [2024-09-15 19:12:46,005 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/f81981ec7/da76d057589f491caf56c2f5c2eb6943 [2024-09-15 19:12:46,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 19:12:46,009 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-15 19:12:46,010 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 19:12:46,010 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 19:12:46,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 19:12:46,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:12:46" (1/1) ... [2024-09-15 19:12:46,018 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@796036cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:12:46, skipping insertion in model container [2024-09-15 19:12:46,019 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:12:46" (1/1) ... [2024-09-15 19:12:46,038 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 19:12:46,194 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2024-09-15 19:12:46,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:12:46,247 INFO L200 MainTranslator]: Completed pre-run [2024-09-15 19:12:46,259 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2024-09-15 19:12:46,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:12:46,294 INFO L204 MainTranslator]: Completed translation [2024-09-15 19:12:46,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:12:46 WrapperNode [2024-09-15 19:12:46,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 19:12:46,296 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 19:12:46,296 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 19:12:46,296 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 19:12:46,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:12:46" (1/1) ... [2024-09-15 19:12:46,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:12:46" (1/1) ... [2024-09-15 19:12:46,322 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-15 19:12:46,323 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 19:12:46,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 19:12:46,324 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 19:12:46,325 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 19:12:46,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:12:46" (1/1) ... [2024-09-15 19:12:46,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:12:46" (1/1) ... [2024-09-15 19:12:46,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:12:46" (1/1) ... [2024-09-15 19:12:46,350 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-15 19:12:46,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:12:46" (1/1) ... [2024-09-15 19:12:46,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:12:46" (1/1) ... [2024-09-15 19:12:46,354 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:12:46" (1/1) ... [2024-09-15 19:12:46,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:12:46" (1/1) ... [2024-09-15 19:12:46,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:12:46" (1/1) ... [2024-09-15 19:12:46,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:12:46" (1/1) ... [2024-09-15 19:12:46,361 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 19:12:46,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 19:12:46,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 19:12:46,362 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 19:12:46,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:12:46" (1/1) ... [2024-09-15 19:12:46,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:12:46,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:12:46,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-15 19:12:46,403 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-15 19:12:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 19:12:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-15 19:12:46,443 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-15 19:12:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-15 19:12:46,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-15 19:12:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 19:12:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-15 19:12:46,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-15 19:12:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 19:12:46,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 19:12:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 19:12:46,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 19:12:46,503 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 19:12:46,505 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 19:12:46,709 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-15 19:12:46,710 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 19:12:46,741 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 19:12:46,742 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-15 19:12:46,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:12:46 BoogieIcfgContainer [2024-09-15 19:12:46,743 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 19:12:46,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 19:12:46,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 19:12:46,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 19:12:46,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 07:12:46" (1/3) ... [2024-09-15 19:12:46,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34797163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:12:46, skipping insertion in model container [2024-09-15 19:12:46,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:12:46" (2/3) ... [2024-09-15 19:12:46,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34797163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:12:46, skipping insertion in model container [2024-09-15 19:12:46,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:12:46" (3/3) ... [2024-09-15 19:12:46,752 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2024-09-15 19:12:46,769 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 19:12:46,769 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-15 19:12:46,842 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 19:12:46,849 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4d464f2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 19:12:46,850 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-15 19:12:46,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 19:12:46,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-15 19:12:46,861 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:12:46,861 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:12:46,862 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:12:46,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:12:46,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2011850563, now seen corresponding path program 1 times [2024-09-15 19:12:46,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:12:46,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339785274] [2024-09-15 19:12:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:12:46,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:12:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:12:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:12:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 19:12:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 19:12:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-15 19:12:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 19:12:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-15 19:12:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 19:12:47,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:12:47,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339785274] [2024-09-15 19:12:47,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339785274] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:12:47,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:12:47,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 19:12:47,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545024738] [2024-09-15 19:12:47,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:12:47,123 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-15 19:12:47,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:12:47,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-15 19:12:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 19:12:47,151 INFO L87 Difference]: Start difference. First operand has 38 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-15 19:12:47,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:12:47,182 INFO L93 Difference]: Finished difference Result 70 states and 115 transitions. [2024-09-15 19:12:47,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-15 19:12:47,186 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2024-09-15 19:12:47,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:12:47,194 INFO L225 Difference]: With dead ends: 70 [2024-09-15 19:12:47,194 INFO L226 Difference]: Without dead ends: 34 [2024-09-15 19:12:47,199 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 19:12:47,202 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:12:47,205 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 19:12:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-15 19:12:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-15 19:12:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-15 19:12:47,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-09-15 19:12:47,252 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 42 [2024-09-15 19:12:47,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:12:47,253 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-09-15 19:12:47,253 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-15 19:12:47,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:12:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-09-15 19:12:47,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-15 19:12:47,258 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:12:47,258 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:12:47,258 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 19:12:47,258 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:12:47,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:12:47,259 INFO L85 PathProgramCache]: Analyzing trace with hash -213832741, now seen corresponding path program 1 times [2024-09-15 19:12:47,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:12:47,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193951024] [2024-09-15 19:12:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:12:47,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:12:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:12:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:12:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 19:12:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 19:12:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-15 19:12:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 19:12:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-15 19:12:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-15 19:12:47,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:12:47,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193951024] [2024-09-15 19:12:47,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193951024] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:12:47,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411109013] [2024-09-15 19:12:47,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:12:47,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:12:47,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:12:47,633 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:12:47,636 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 19:12:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:47,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-15 19:12:47,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:12:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-15 19:12:47,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:12:48,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411109013] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:12:48,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:12:48,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-09-15 19:12:48,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468370709] [2024-09-15 19:12:48,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:12:48,151 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-15 19:12:48,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:12:48,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-15 19:12:48,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-09-15 19:12:48,154 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-15 19:12:48,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:12:48,404 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2024-09-15 19:12:48,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-15 19:12:48,405 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 43 [2024-09-15 19:12:48,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:12:48,407 INFO L225 Difference]: With dead ends: 55 [2024-09-15 19:12:48,407 INFO L226 Difference]: Without dead ends: 47 [2024-09-15 19:12:48,408 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-15 19:12:48,409 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 27 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:12:48,409 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 233 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:12:48,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-15 19:12:48,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-09-15 19:12:48,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-15 19:12:48,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2024-09-15 19:12:48,435 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 43 [2024-09-15 19:12:48,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:12:48,436 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2024-09-15 19:12:48,436 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-15 19:12:48,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:12:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2024-09-15 19:12:48,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-15 19:12:48,438 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:12:48,438 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:12:48,456 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 19:12:48,639 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:12:48,639 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:12:48,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:12:48,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1967462229, now seen corresponding path program 1 times [2024-09-15 19:12:48,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:12:48,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561993458] [2024-09-15 19:12:48,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:12:48,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:12:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:12:48,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975254293] [2024-09-15 19:12:48,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:12:48,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:12:48,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:12:48,667 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:12:48,669 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 19:12:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:48,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-15 19:12:48,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:12:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 19:12:48,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 19:12:48,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:12:48,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561993458] [2024-09-15 19:12:48,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:12:48,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975254293] [2024-09-15 19:12:48,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975254293] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:12:48,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:12:48,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 19:12:48,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868579962] [2024-09-15 19:12:48,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:12:48,764 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 19:12:48,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:12:48,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 19:12:48,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 19:12:48,765 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-15 19:12:48,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:12:48,827 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2024-09-15 19:12:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 19:12:48,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 44 [2024-09-15 19:12:48,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:12:48,829 INFO L225 Difference]: With dead ends: 65 [2024-09-15 19:12:48,829 INFO L226 Difference]: Without dead ends: 63 [2024-09-15 19:12:48,830 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-15 19:12:48,831 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:12:48,831 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 144 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 19:12:48,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-15 19:12:48,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2024-09-15 19:12:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 20 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-15 19:12:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2024-09-15 19:12:48,845 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 44 [2024-09-15 19:12:48,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:12:48,846 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-09-15 19:12:48,846 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-15 19:12:48,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:12:48,846 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2024-09-15 19:12:48,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-15 19:12:48,847 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:12:48,848 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:12:48,862 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-15 19:12:49,051 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:12:49,052 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:12:49,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:12:49,052 INFO L85 PathProgramCache]: Analyzing trace with hash -189867411, now seen corresponding path program 1 times [2024-09-15 19:12:49,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:12:49,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502125862] [2024-09-15 19:12:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:12:49,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:12:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:12:49,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146965263] [2024-09-15 19:12:49,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:12:49,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:12:49,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:12:49,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:12:49,092 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 19:12:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:49,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-15 19:12:49,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:12:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 19:12:49,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 19:12:49,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:12:49,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502125862] [2024-09-15 19:12:49,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:12:49,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146965263] [2024-09-15 19:12:49,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146965263] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:12:49,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:12:49,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 19:12:49,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141037027] [2024-09-15 19:12:49,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:12:49,224 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 19:12:49,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:12:49,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 19:12:49,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 19:12:49,225 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-15 19:12:49,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:12:49,282 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2024-09-15 19:12:49,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 19:12:49,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-09-15 19:12:49,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:12:49,288 INFO L225 Difference]: With dead ends: 61 [2024-09-15 19:12:49,288 INFO L226 Difference]: Without dead ends: 59 [2024-09-15 19:12:49,289 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-15 19:12:49,290 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:12:49,291 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 154 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 19:12:49,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-15 19:12:49,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-09-15 19:12:49,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-15 19:12:49,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-09-15 19:12:49,309 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 49 [2024-09-15 19:12:49,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:12:49,309 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-09-15 19:12:49,315 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-15 19:12:49,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:12:49,316 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-09-15 19:12:49,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-15 19:12:49,318 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:12:49,318 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:12:49,342 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 19:12:49,525 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:12:49,526 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:12:49,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:12:49,526 INFO L85 PathProgramCache]: Analyzing trace with hash -470549715, now seen corresponding path program 1 times [2024-09-15 19:12:49,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:12:49,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378349915] [2024-09-15 19:12:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:12:49,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:12:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:12:49,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185076528] [2024-09-15 19:12:49,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:12:49,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:12:49,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:12:49,557 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:12:49,559 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 19:12:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:49,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-15 19:12:49,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:12:49,814 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-15 19:12:49,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:12:49,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:12:49,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378349915] [2024-09-15 19:12:49,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:12:49,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185076528] [2024-09-15 19:12:49,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185076528] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:12:49,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-15 19:12:49,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-09-15 19:12:49,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876697889] [2024-09-15 19:12:49,959 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-15 19:12:49,959 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-15 19:12:49,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:12:49,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-15 19:12:49,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-15 19:12:49,961 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-15 19:12:50,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:12:50,113 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2024-09-15 19:12:50,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-15 19:12:50,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 59 [2024-09-15 19:12:50,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:12:50,115 INFO L225 Difference]: With dead ends: 67 [2024-09-15 19:12:50,115 INFO L226 Difference]: Without dead ends: 65 [2024-09-15 19:12:50,116 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-09-15 19:12:50,116 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 22 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:12:50,117 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 201 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:12:50,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-15 19:12:50,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2024-09-15 19:12:50,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 37 states have internal predecessors, (38), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-15 19:12:50,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-09-15 19:12:50,130 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 59 [2024-09-15 19:12:50,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:12:50,131 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-09-15 19:12:50,131 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-15 19:12:50,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:12:50,131 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-09-15 19:12:50,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-15 19:12:50,136 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:12:50,137 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:12:50,154 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-15 19:12:50,340 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:12:50,341 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:12:50,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:12:50,341 INFO L85 PathProgramCache]: Analyzing trace with hash 487403380, now seen corresponding path program 1 times [2024-09-15 19:12:50,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:12:50,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743748049] [2024-09-15 19:12:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:12:50,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:12:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:12:50,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793790607] [2024-09-15 19:12:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:12:50,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:12:50,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:12:50,367 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:12:50,369 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 19:12:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:50,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-15 19:12:50,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:12:50,598 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 19:12:50,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:12:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-09-15 19:12:50,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:12:50,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743748049] [2024-09-15 19:12:50,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:12:50,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793790607] [2024-09-15 19:12:50,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793790607] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 19:12:50,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 19:12:50,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2024-09-15 19:12:50,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360226265] [2024-09-15 19:12:50,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:12:50,710 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 19:12:50,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:12:50,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 19:12:50,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-09-15 19:12:50,712 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-15 19:12:50,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:12:50,773 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2024-09-15 19:12:50,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 19:12:50,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2024-09-15 19:12:50,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:12:50,777 INFO L225 Difference]: With dead ends: 68 [2024-09-15 19:12:50,777 INFO L226 Difference]: Without dead ends: 66 [2024-09-15 19:12:50,777 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-15 19:12:50,778 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:12:50,778 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 138 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 19:12:50,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-15 19:12:50,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2024-09-15 19:12:50,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-15 19:12:50,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2024-09-15 19:12:50,801 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 66 [2024-09-15 19:12:50,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:12:50,803 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2024-09-15 19:12:50,803 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-15 19:12:50,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:12:50,805 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2024-09-15 19:12:50,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-15 19:12:50,806 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:12:50,807 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:12:50,826 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-15 19:12:51,007 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-15 19:12:51,008 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:12:51,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:12:51,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2098403842, now seen corresponding path program 1 times [2024-09-15 19:12:51,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:12:51,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637146867] [2024-09-15 19:12:51,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:12:51,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:12:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:51,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:12:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:51,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:12:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:51,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 19:12:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:51,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 19:12:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:51,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-15 19:12:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:51,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 19:12:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:51,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-15 19:12:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:51,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 19:12:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:51,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-15 19:12:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:51,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 19:12:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:51,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 19:12:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-15 19:12:51,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:12:51,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637146867] [2024-09-15 19:12:51,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637146867] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:12:51,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772239769] [2024-09-15 19:12:51,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:12:51,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:12:51,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:12:51,252 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:12:51,253 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-15 19:12:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:51,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-15 19:12:51,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:12:51,748 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 19:12:51,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:12:51,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772239769] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:12:51,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:12:51,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 17 [2024-09-15 19:12:51,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459599834] [2024-09-15 19:12:51,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:12:51,943 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-15 19:12:51,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:12:51,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-15 19:12:51,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-09-15 19:12:51,945 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-09-15 19:12:52,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:12:52,278 INFO L93 Difference]: Finished difference Result 90 states and 111 transitions. [2024-09-15 19:12:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-15 19:12:52,279 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) Word has length 68 [2024-09-15 19:12:52,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:12:52,280 INFO L225 Difference]: With dead ends: 90 [2024-09-15 19:12:52,280 INFO L226 Difference]: Without dead ends: 69 [2024-09-15 19:12:52,281 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2024-09-15 19:12:52,282 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 43 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:12:52,282 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 339 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:12:52,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-15 19:12:52,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-09-15 19:12:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 19:12:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2024-09-15 19:12:52,298 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 68 [2024-09-15 19:12:52,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:12:52,299 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2024-09-15 19:12:52,299 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-09-15 19:12:52,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:12:52,300 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2024-09-15 19:12:52,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-15 19:12:52,301 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:12:52,301 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:12:52,316 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-15 19:12:52,502 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:12:52,503 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:12:52,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:12:52,503 INFO L85 PathProgramCache]: Analyzing trace with hash -607760099, now seen corresponding path program 1 times [2024-09-15 19:12:52,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:12:52,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089455643] [2024-09-15 19:12:52,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:12:52,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:12:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:12:52,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108338399] [2024-09-15 19:12:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:12:52,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:12:52,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:12:52,534 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:12:52,536 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-15 19:12:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:12:52,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-15 19:12:52,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:12:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-09-15 19:12:53,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:12:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-09-15 19:12:54,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:12:54,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089455643] [2024-09-15 19:12:54,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:12:54,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108338399] [2024-09-15 19:12:54,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108338399] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:12:54,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:12:54,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2024-09-15 19:12:54,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368977421] [2024-09-15 19:12:54,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:12:54,547 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-15 19:12:54,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:12:54,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-15 19:12:54,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2024-09-15 19:12:54,549 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 13 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2024-09-15 19:13:00,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 19:13:00,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:13:00,883 INFO L93 Difference]: Finished difference Result 159 states and 233 transitions. [2024-09-15 19:13:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-15 19:13:00,883 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 13 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) Word has length 90 [2024-09-15 19:13:00,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:13:00,886 INFO L225 Difference]: With dead ends: 159 [2024-09-15 19:13:00,886 INFO L226 Difference]: Without dead ends: 157 [2024-09-15 19:13:00,887 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=446, Invalid=1716, Unknown=0, NotChecked=0, Total=2162 [2024-09-15 19:13:00,892 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 150 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 170 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:13:00,892 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 632 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 512 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2024-09-15 19:13:00,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-09-15 19:13:00,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 121. [2024-09-15 19:13:00,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 62 states have internal predecessors, (73), 51 states have call successors, (51), 10 states have call predecessors, (51), 9 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-15 19:13:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 173 transitions. [2024-09-15 19:13:00,957 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 173 transitions. Word has length 90 [2024-09-15 19:13:00,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:13:00,958 INFO L474 AbstractCegarLoop]: Abstraction has 121 states and 173 transitions. [2024-09-15 19:13:00,958 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 13 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2024-09-15 19:13:00,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:13:00,959 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 173 transitions. [2024-09-15 19:13:00,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-15 19:13:00,960 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:13:00,960 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:13:00,976 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-15 19:13:01,164 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:13:01,165 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:13:01,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:13:01,165 INFO L85 PathProgramCache]: Analyzing trace with hash 281468069, now seen corresponding path program 1 times [2024-09-15 19:13:01,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:13:01,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089319886] [2024-09-15 19:13:01,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:13:01,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:13:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:13:01,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801205283] [2024-09-15 19:13:01,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:13:01,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:13:01,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:13:01,212 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:13:01,220 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-15 19:13:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:01,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-15 19:13:01,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:13:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-15 19:13:01,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:13:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-09-15 19:13:02,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:13:02,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089319886] [2024-09-15 19:13:02,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:13:02,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801205283] [2024-09-15 19:13:02,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801205283] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:13:02,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:13:02,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2024-09-15 19:13:02,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757294064] [2024-09-15 19:13:02,166 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:13:02,167 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-15 19:13:02,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:13:02,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-15 19:13:02,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-09-15 19:13:02,168 INFO L87 Difference]: Start difference. First operand 121 states and 173 transitions. Second operand has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) [2024-09-15 19:13:03,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:13:03,394 INFO L93 Difference]: Finished difference Result 244 states and 378 transitions. [2024-09-15 19:13:03,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-15 19:13:03,395 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) Word has length 95 [2024-09-15 19:13:03,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:13:03,397 INFO L225 Difference]: With dead ends: 244 [2024-09-15 19:13:03,397 INFO L226 Difference]: Without dead ends: 238 [2024-09-15 19:13:03,398 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=269, Invalid=991, Unknown=0, NotChecked=0, Total=1260 [2024-09-15 19:13:03,399 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 108 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-15 19:13:03,399 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 451 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-15 19:13:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-09-15 19:13:03,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 189. [2024-09-15 19:13:03,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 97 states have internal predecessors, (117), 84 states have call successors, (84), 11 states have call predecessors, (84), 10 states have return successors, (81), 80 states have call predecessors, (81), 81 states have call successors, (81) [2024-09-15 19:13:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 282 transitions. [2024-09-15 19:13:03,508 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 282 transitions. Word has length 95 [2024-09-15 19:13:03,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:13:03,509 INFO L474 AbstractCegarLoop]: Abstraction has 189 states and 282 transitions. [2024-09-15 19:13:03,509 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) [2024-09-15 19:13:03,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:13:03,510 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 282 transitions. [2024-09-15 19:13:03,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-15 19:13:03,511 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:13:03,511 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:13:03,528 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-15 19:13:03,715 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:13:03,716 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:13:03,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:13:03,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1141291923, now seen corresponding path program 1 times [2024-09-15 19:13:03,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:13:03,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542318642] [2024-09-15 19:13:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:13:03,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:13:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:13:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:13:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 19:13:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 19:13:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-15 19:13:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 19:13:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-15 19:13:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 19:13:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-15 19:13:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 19:13:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 19:13:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 19:13:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-15 19:13:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-15 19:13:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 19:13:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-15 19:13:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-15 19:13:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 39 proven. 12 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-09-15 19:13:03,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:13:03,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542318642] [2024-09-15 19:13:03,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542318642] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:13:03,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132552244] [2024-09-15 19:13:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:13:03,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:13:03,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:13:03,967 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:13:03,977 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-15 19:13:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-15 19:13:04,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:13:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 99 proven. 12 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-09-15 19:13:04,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:13:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-09-15 19:13:04,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132552244] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:13:04,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:13:04,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-15 19:13:04,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608883247] [2024-09-15 19:13:04,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:13:04,241 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-15 19:13:04,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:13:04,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-15 19:13:04,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-09-15 19:13:04,242 INFO L87 Difference]: Start difference. First operand 189 states and 282 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2024-09-15 19:13:04,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:13:04,393 INFO L93 Difference]: Finished difference Result 200 states and 291 transitions. [2024-09-15 19:13:04,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-15 19:13:04,394 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 101 [2024-09-15 19:13:04,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:13:04,396 INFO L225 Difference]: With dead ends: 200 [2024-09-15 19:13:04,396 INFO L226 Difference]: Without dead ends: 71 [2024-09-15 19:13:04,398 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-09-15 19:13:04,399 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:13:04,400 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 299 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:13:04,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-15 19:13:04,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-09-15 19:13:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 25 states have call successors, (25), 9 states have call predecessors, (25), 7 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-15 19:13:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2024-09-15 19:13:04,424 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 101 [2024-09-15 19:13:04,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:13:04,424 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2024-09-15 19:13:04,424 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2024-09-15 19:13:04,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:13:04,425 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2024-09-15 19:13:04,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-15 19:13:04,426 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:13:04,426 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:13:04,444 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-15 19:13:04,630 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-15 19:13:04,631 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:13:04,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:13:04,631 INFO L85 PathProgramCache]: Analyzing trace with hash -183794789, now seen corresponding path program 2 times [2024-09-15 19:13:04,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:13:04,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245106271] [2024-09-15 19:13:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:13:04,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:13:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:13:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:13:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 19:13:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 19:13:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-15 19:13:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 19:13:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-15 19:13:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 19:13:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-15 19:13:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 19:13:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 19:13:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 19:13:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-15 19:13:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-15 19:13:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 19:13:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-15 19:13:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-15 19:13:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-15 19:13:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-15 19:13:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-15 19:13:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-15 19:13:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-15 19:13:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-15 19:13:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:13:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-15 19:13:04,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:13:04,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245106271] [2024-09-15 19:13:04,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245106271] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:13:04,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746424119] [2024-09-15 19:13:04,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 19:13:04,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:13:04,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:13:04,944 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:13:04,946 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-15 19:13:05,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 19:13:05,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:13:05,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-15 19:13:05,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:13:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-15 19:13:05,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:13:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-15 19:13:05,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746424119] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:13:05,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:13:05,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-09-15 19:13:05,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747339953] [2024-09-15 19:13:05,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:13:05,353 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-15 19:13:05,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:13:05,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-15 19:13:05,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-09-15 19:13:05,354 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 15 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 14 states have call predecessors, (49), 14 states have call successors, (49) [2024-09-15 19:13:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:13:05,578 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2024-09-15 19:13:05,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-15 19:13:05,578 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 15 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 14 states have call predecessors, (49), 14 states have call successors, (49) Word has length 134 [2024-09-15 19:13:05,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:13:05,579 INFO L225 Difference]: With dead ends: 71 [2024-09-15 19:13:05,579 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 19:13:05,580 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2024-09-15 19:13:05,580 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 20 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:13:05,580 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 438 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:13:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 19:13:05,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 19:13:05,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 19:13:05,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 19:13:05,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2024-09-15 19:13:05,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:13:05,581 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 19:13:05,581 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 15 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 14 states have call predecessors, (49), 14 states have call successors, (49) [2024-09-15 19:13:05,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:13:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 19:13:05,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 19:13:05,584 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-15 19:13:05,601 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-15 19:13:05,785 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-15 19:13:05,788 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:13:05,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-15 19:13:06,701 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 19:13:06,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 07:13:06 BoogieIcfgContainer [2024-09-15 19:13:06,718 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 19:13:06,718 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-15 19:13:06,718 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-15 19:13:06,718 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-15 19:13:06,719 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:12:46" (3/4) ... [2024-09-15 19:13:06,721 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-15 19:13:06,724 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-15 19:13:06,724 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-15 19:13:06,724 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-15 19:13:06,724 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-15 19:13:06,727 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-09-15 19:13:06,727 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-09-15 19:13:06,728 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-15 19:13:06,728 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-09-15 19:13:06,811 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-15 19:13:06,811 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-15 19:13:06,811 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-15 19:13:06,812 INFO L158 Benchmark]: Toolchain (without parser) took 20802.96ms. Allocated memory was 58.7MB in the beginning and 134.2MB in the end (delta: 75.5MB). Free memory was 33.0MB in the beginning and 79.6MB in the end (delta: -46.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-09-15 19:13:06,812 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory was 33.3MB in the beginning and 33.3MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 19:13:06,813 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.97ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 32.9MB in the beginning and 53.6MB in the end (delta: -20.8MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2024-09-15 19:13:06,813 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.47ms. Allocated memory is still 75.5MB. Free memory was 53.6MB in the beginning and 52.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 19:13:06,813 INFO L158 Benchmark]: Boogie Preprocessor took 37.25ms. Allocated memory is still 75.5MB. Free memory was 52.6MB in the beginning and 50.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 19:13:06,813 INFO L158 Benchmark]: RCFGBuilder took 381.44ms. Allocated memory is still 75.5MB. Free memory was 50.8MB in the beginning and 36.8MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-15 19:13:06,814 INFO L158 Benchmark]: TraceAbstraction took 19970.80ms. Allocated memory was 75.5MB in the beginning and 134.2MB in the end (delta: 58.7MB). Free memory was 36.2MB in the beginning and 84.8MB in the end (delta: -48.6MB). Peak memory consumption was 62.7MB. Max. memory is 16.1GB. [2024-09-15 19:13:06,814 INFO L158 Benchmark]: Witness Printer took 93.07ms. Allocated memory is still 134.2MB. Free memory was 84.8MB in the beginning and 79.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-15 19:13:06,816 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory was 33.3MB in the beginning and 33.3MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.97ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 32.9MB in the beginning and 53.6MB in the end (delta: -20.8MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.47ms. Allocated memory is still 75.5MB. Free memory was 53.6MB in the beginning and 52.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.25ms. Allocated memory is still 75.5MB. Free memory was 52.6MB in the beginning and 50.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 381.44ms. Allocated memory is still 75.5MB. Free memory was 50.8MB in the beginning and 36.8MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 19970.80ms. Allocated memory was 75.5MB in the beginning and 134.2MB in the end (delta: 58.7MB). Free memory was 36.2MB in the beginning and 84.8MB in the end (delta: -48.6MB). Peak memory consumption was 62.7MB. Max. memory is 16.1GB. * Witness Printer took 93.07ms. Allocated memory is still 134.2MB. Free memory was 84.8MB in the beginning and 79.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.0s, OverallIterations: 11, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 416 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 392 mSDsluCounter, 3076 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2640 mSDsCounter, 402 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1934 IncrementalHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 402 mSolverCounterUnsat, 436 mSDtfsCounter, 1934 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1471 GetRequests, 1281 SyntacticMatches, 6 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189occurred in iteration=9, InterpolantAutomatonStates: 118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 108 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 1540 NumberOfCodeBlocks, 1540 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1603 ConstructedInterpolants, 0 QuantifiedInterpolants, 5248 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1837 ConjunctsInSsa, 212 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 3904/4266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((a == 1) && (r == 0)) && (b == 1)) && (y == 1)) && (k == 0)) && (s == 1)) && (x == 1)) && (q == 0)) && (yy == 1)) && (c == 1)) && (p == 1)) || (((((((((((a == 1) && (r == 0)) && (b == 1)) && (y == 1)) && (s == 1)) && (x == 1)) && (k == 1)) && (q == 0)) && (c == 0)) && (yy == 1)) && (p == 1))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((a == 1) && (r == 0)) && (b == 1)) && (y == 1)) && (s == 1)) && (x == 1)) && (q == 0)) && (yy == 1)) && (p == 1)) || (((((b == 0) && (y == 1)) && (a == (((__int128) y * r) + ((__int128) p * x)))) && (x == 1)) && (((__int128) q + s) == 0))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-15 19:13:06,841 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE